11943 has 6 divisors (see below), whose sum is σ = 17264. Its totient is φ = 7956.

The previous prime is 11941. The next prime is 11953. The reversal of 11943 is 34911.

It is not a de Polignac number, because 11943 - 2¹ = 11941 is a prime.

It is a Duffinian number.

11943 is a lucky number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 655 + ... + 672.

11943 is a Friedman number, since it can be written as 9*(11^3-4), using all its digits and the basic arithmetic operations.

2¹¹⁹⁴³ is an apocalyptic number.

11943 is a deficient number, since it is larger than the sum of its proper divisors (5321).

11943 is a wasteful number, since it uses less digits than its factorization.

11943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333 (or 1330 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 11943 is about 109.2840336005. The cubic root of 11943 is about 22.8579780201.

The spelling of 11943 in words is "eleven thousand, nine hundred forty-three".